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Understanding crypto · in plain words
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Ledger in 2025: a pivotal year for security and digital identity

In 2025, Ledger, the French company specialising in digital asset security, consolidated its place among the key players in the crypto ecosystem. Facing a market marked by a surge in cyberattacks and a...

Joshua Hepner · 4 FEB 2026 · 3 min read

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· Contents ·

This week’s essentials

8 NOV 2025

3 min read

Virgil Griffith: the blockchain genius who defied the United States

By wanting to share his knowledge of blockchain, Virgil Griffith never imagined that his curiosity would lead him to prison. This American researcher, a respected figure in the crypto world, saw his life turned upside down after a controversial trip to Korea

· The basics ·

The fundamentals, without the jargon

· Narratives ·

The sectors of the crypto market

BTC / ETH / XRP / SOL / BNB

Top 5

The five largest cryptocurrencies aren’t tied to a specific theme in this portfolio, so each can be analysed individually. That said, each one belongs to its own distinct narrative.

ARB / AVAX / ADA

Layer 1&2

Layer 1: the main blockchain, which secures and validates transactions (BTC, ETH, ADA). Layer 2: a solution built on top of Layer 1, speeding things up and cutting costs (e.g. ARB).

ONDO / LINK

RWA (Real World Assets)

RWAs (Real World Assets) represent the tokenisation of physical and financial assets (real estate, bonds, equities, commodities) on the blockchain. This sector aims to bring traditional finance (TradFi) and decentralised finance (DeFi) closer together by adding liquidity, accessibility and transparency.

TAO / AKT / FET

AI

AI and blockchain are joining forces to create cryptos able to optimise data management, automate processes and democratise access to computing power.

SAND / IMX

GameFi

Decentralised gaming (GameFi) merges video games and blockchain, letting players truly own their digital assets and monetise them.

AAVE / INJ

DeFi

DeFi (Decentralised Finance) removes financial intermediaries and lets anyone access decentralised banking services directly through the blockchain.

DOGE

Memecoins

Memecoins are cryptos born out of jokes or viral trends, with no real utility. Their value rests solely on speculation and community hype.

CHZ / AUDIO

Other

The “Other” category is a more flexible space in the portfolio, for cryptocurrencies that don’t fit a precise narrative but are still of strategic interest.

USDT or USDC

Stablecoin

Stablecoins play a key role in a portfolio, even though they’re often underestimated. Pegged to a stable fiat currency (USD), they offer an alternative to volatile cryptos while enabling fast transactions, accessible at any time.

· Cryptos ·

The assets we track

· THE NEWSLETTER ·

Every week, crypto explained simply.

A selection of news, an analysis of the main trends, and the narratives to watch. No jargon, no financial advice.

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